Volltext Seite (XML)
630 BESIKS. Amorphous. Fracture conchoidal. Translucent...trans lucent on the edges. Lustre fatty. Yellow, brown. Streak yellowish-white. Brittle, h = 1'5... 2’0, a = ro36...l‘069. At 140° c becomes translucent and elastic ; at 250° c melts into a yellow oil. Burns with a smoky flame and aromatic smell. Soluble in 67 parts of alcohol, and in 13 parts of sether. Soluble in sulphuric acid, forming a dark brown solution. Analyses by Schrotter:— Carbon 80’30 80-19 80‘70 Hydrogen .... io - 68 1074 10 P 62 Oxygen 9’02 9‘08 8'68 Nitrogen o p i8 0'18 0'18 Is found in brown coal, at Walchow in Moravia. 473. AMBER.—Amber; Phillips. Succin; Hauy. Gelbes Erd-Harz ; Mohs. Bernstein ; Hausmann. Succinit; Hai- dinger. Amorphous. Transparent... translucent. Lustre waxy. H = 1-5. Yellow of various shades, hyacinth-red, brow, white. Streak yellowish-white. Slightly brittle, it —2'0...2'5. G = ro...i'i. Acquires resinous electricity by friction. At 287° c melts and is decomposed, yielding water, an empy- reumatic oil and succinic acid. Bums with a bright flame and a peculiar smell, leaving a carbonaceous residue. C 10 H 8 O, carbon 78’96, hydrogen 10'57, oxygen 10‘67. Analysis by Schrotter:— Carbon 78'82 Hydrogen 10'23 Oxygen 10‘95 In rounded masses and disseminated, frequently containing air bubbles, insects and parts of plants. Is supposed to be derived from the resins of extinct conifer®. It occurs principally in the tertiary brown coal formations. Is found in Sicily between Catania and Semito, in Prussia prin cipally between Palmnicken and Gross-Hubenicken, Pomerania, Holstein, Courland, Livonia, Greenland, China, France, Italy, Spain, England, Ireland. 474. NAPHTHA.—Naphtha; Phillips,Beudant. Schwarzes Erd-Harz ; Mohs. Erdol; Hausmann. Bitumen ; Haidinger. Liquid. Transparent... translucent. Colourless...yellow... brown, g = 0 7.. .0'8. Unctuous to the touch. Smell aro-
